Age: 3+. Includes: 1 pen with tassel, 5 felt-tip pens, 1 roll of patterned stickers, 2 sticker sheets, a secret, magical Harry Potter diary with 100 pages, lock and key! Magical light effects when you press the cover. One padlock and two keys included. Power supply: 2 x 3.0 V CR2032 batteries (included).